I’ve always avoided using WD-40 on my guns due to its reputation for gumming actions. I never thought of it as a rust preventative. However the rust preventatives I’ve had faith in may not be as good as I thought. My gun storage situation (dry room, Goldenrod in safe) doesn’t present too much of a rust problem so I might not be as critical as I should be.
Take a look at this from Brownell’s:
You learn something new every day.
Bottom line: if what you are presently doing to prevent rust is working for you, don’t change a thing. If it isn’t, checkout that Brownell’s video.
The Technoid writing for Shotgun Report, LLC
(Often in error. Never in doubt.)